GHSA-wwr9-4gmr-xvq9
H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | h2o | >= 3.30.0.7, <= 3.46.0.1 | no fix listed |
| Maven | ai.h2o:h2o-core | >= 3.30.0.7, <= 3.46.0.1 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
A vulnerability in the `/3/Parse` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an attacker can exhaust all available threads, leading to a complete denial of service.
References
External links from the advisory. They lead to third-party sites.